What is the difference between a Nameserver and a Nameserver profile?
When we refer to a Nameserver, we mean the actual address which points to an IP, for example ns1.mynameserver.com.
A Nameserver profile is a way of storing sets of Nameservers for future reference. When you want to assign Nameservers to a domain, you can simply select the title of the profile you would like to use from a drop-down menu.
For example, you could create a Nameserver profile named 'My Nameservers', containing the Nameservers ns1.mynameserver.com and ns2.mynameserver.com.